Scale factor from logical coordinate space to the device coordinate space

Property definitions

ios $ NitGLKView :: content_scale_factor
	# Scale factor from logical coordinate space to the device coordinate space
	fun content_scale_factor: Float do return native.content_scale_factor
lib/ios/glkit.nit:97,2--98,70

gamnit :: input_ios $ NitGLKView :: content_scale_factor
	redef var content_scale_factor = super is lazy
lib/gamnit/input_ios.nit:45,2--47